问题描述failed to execute 'dot', make sure the Graphviz executables are on your systems' PATH需要先安装官方提供的安装包，因为需要翻墙，所以我把他下载下来后上传了。https://download.csdn.net/download/electric_sheep/85233723大家可以来这里下载原因分析：其实就是